silicone bellows hose flexible rubber bellow

A silicone rubber bellows hose has a corrugated wall that allows its length to change within the limits of the chosen profile. It can be developed for a flexible connection where the distance between attachment points varies. The folds provide that movement, so their orientation and the surrounding free space are important to the installed fit.

When joining two components, align the ends before securing them. Twisting the body to reach a fitting can leave one side of the folds more stretched than the other. If the attachment points are offset, the shape should be reviewed for that offset rather than forcing a straight sample into position.

ETOL customizes the dimensions, material, hardness and color of this part. The design should distinguish normal movement from the extreme positions reached during operation or maintenance. Leave sufficient space for the outside of the folds when compressed, and check that a nearby bracket cannot catch the wall as the connection extends.

The hose-shaped appearance alone does not establish suitability for carrying a fluid under pressure or vacuum. Where that function is required, it needs to be part of the component specification and assembly evaluation.

Inspect the fitted bellows through its operating movement before putting the equipment into regular use. Pay attention to rubbing near the end fittings and dirt trapped between the folds. Avoid pulling on the corrugated section to disconnect a tight end fitting, as this places removal force through the flexible wall.

Material options

Custom silicone compound; formulation and geometry developed together.

Hardness selection

Silicone options: 20–80 Shore A. Avoid pulling on the corrugated section to disconnect a tight end fitting, as this places removal force through the flexible wall.

Custom geometry

ETOL customizes the dimensions, material, hardness and color of this part.

Fit evaluation

Leave sufficient space for the outside of the folds when compressed, and check that a nearby bracket cannot catch the wall as the connection extends.

Color & OEM

Custom colors; identification clear of folds and end connections.

Photos illustrate structure or material appearance only. A silicone bellows hose has a corrugated wall that allows its length to change within the limits of the chosen profile. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.